Science Year 6

THEME E: INVESTIGATING TECHNOLOGY

Khairiza binti Khalidin

Complex Machines

A complex machine is a machine made up of more than one simple machine.Ex: Bicycle, wheelbarrow, watch

SIMPLE MACHINES

combined to make

to

helps make work easier and faster because allow us to use less force.

A lever Made-up of a bar and

supported by a fulcrum. Helps to move object.Ex: Scissors, paper cutter,broom

An inclined plane A flat surface Helps people move

objects to a higher or lower place.

Ex: slide, stairs, path going up a hill

Pulley A rope or chain wrapped around the edge of a

wheel. Pulleys move an object upwards, downwards or

sideways. They help move heavy object.Ex: raising a flag, crane

Wheel and axle Made-up of a rod called axle,

attached to the centre of a wheel. Moves or turns an object.Ex: tap, car spanner, roller blade

Wedge Made-up of two inclined planes that are

joined together. Used to push or split objects apart.Ex: axe, knife

Gear A wheel with jagged edges. Used to change the speed or

direction of movement.Ex: watch, bicycle

Screw An inclined plane wrapped

around a rod. Used to hold objects

together.Ex: G-clamp, bottle, jack